Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86

* ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86: (114 commits)
  x86: delete vsyscall files during make clean
  kbuild: fix typo SRCARCH in find_sources
  x86: fix kernel rebuild due to vsyscall fallout
  .gitignore update for x86 arch
  x86: unify include/asm/debugreg_32/64.h
  x86: unify include/asm/unwind_32/64.h
  x86: unify include/asm/types_32/64.h
  x86: unify include/asm/tlb_32/64.h
  x86: unify include/asm/siginfo_32/64.h
  x86: unify include/asm/bug_32/64.h
  x86: unify include/asm/mman_32/64.h
  x86: unify include/asm/agp_32/64.h
  x86: unify include/asm/kdebug_32/64.h
  x86: unify include/asm/ioctls_32/64.h
  x86: unify include/asm/floppy_32/64.h
  x86: apply missing DMA/OOM prevention to floppy_32.h
  x86: unify include/asm/cache_32/64.h
  x86: unify include/asm/cache_32/64.h
  x86: unify include/asm/dmi_32/64.h
  x86: unify include/asm/delay_32/64.h
  ...

arch/x86/kernel/cpu/intel_cacheinfo.c

@@ -170,15 +170,15 @@ union l3_cache {
 	unsigned val;
 };
 
-static const unsigned short assocs[] = {
+static unsigned short assocs[] __cpuinitdata = {
 	[1] = 1, [2] = 2, [4] = 4, [6] = 8,
 	[8] = 16, [0xa] = 32, [0xb] = 48,
 	[0xc] = 64,
 	[0xf] = 0xffff // ??
 };
 
-static const unsigned char levels[] = { 1, 1, 2, 3 };
-static const unsigned char types[] = { 1, 2, 3, 3 };
+static unsigned char levels[] __cpuinitdata = { 1, 1, 2, 3 };
+static unsigned char types[] __cpuinitdata = { 1, 2, 3, 3 };
 
 static void __cpuinit amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
 		       union _cpuid4_leaf_ebx *ebx,
@@ -493,8 +493,8 @@ static void __cpuinit cache_remove_shared_cpu_map(unsigned int cpu, int index)
 	}
 }
 #else
-static void __init cache_shared_cpu_map_setup(unsigned int cpu, int index) {}
-static void __init cache_remove_shared_cpu_map(unsigned int cpu, int index) {}
+static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index) {}
+static void __cpuinit cache_remove_shared_cpu_map(unsigned int cpu, int index) {}
 #endif
 
 static void free_cache_attributes(unsigned int cpu)
@@ -794,8 +794,9 @@ static int __cpuinit cache_sysfs_init(void)
 	register_hotcpu_notifier(&cacheinfo_cpu_notifier);
 
 	for_each_online_cpu(i) {
-		cacheinfo_cpu_callback(&cacheinfo_cpu_notifier, CPU_ONLINE,
-			(void *)(long)i);
+		struct sys_device *sys_dev = get_cpu_sysdev((unsigned int)i);
+
+		cache_add_dev(sys_dev);
 	}
 
 	return 0;

arch/x86/kernel/cpu/mcheck/p4.c

@@ -61,6 +61,7 @@ fastcall void smp_thermal_interrupt(struct pt_regs *regs)
 {
 	irq_enter();
 	vendor_thermal_interrupt(regs);
+	__get_cpu_var(irq_stat).irq_thermal_count++;
 	irq_exit();
 }
 

arch/x86/kernel/cpu/mcheck/therm_throt.c

@@ -152,7 +152,7 @@ static __cpuinit int thermal_throttle_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block thermal_throttle_cpu_notifier =
+static struct notifier_block thermal_throttle_cpu_notifier __cpuinitdata =
 {
 	.notifier_call = thermal_throttle_cpu_callback,
 };

arch/x86/kernel/cpu/mtrr/main.c

@@ -738,13 +738,7 @@ void mtrr_ap_init(void)
  */
 void mtrr_save_state(void)
 {
-	int cpu = get_cpu();
-
-	if (cpu == 0)
-		mtrr_save_fixed_ranges(NULL);
-	else
-		smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
-	put_cpu();
+	smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
 }
 
 static int __init mtrr_init_finialize(void)

arch/x86/kernel/cpu/perfctr-watchdog.c

@@ -34,7 +34,7 @@ struct wd_ops {
 	u64 checkbit;
 };
 
-static struct wd_ops *wd_ops;
+static const struct wd_ops *wd_ops;
 
 /* this number is calculated from Intel's MSR_P4_CRU_ESCR5 register and it's
  * offset from MSR_P4_BSU_ESCR0.  It will be the max for all platforms (for now)
@@ -317,7 +317,7 @@ static void single_msr_rearm(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz)
 	write_watchdog_counter(wd->perfctr_msr, NULL, nmi_hz);
 }
 
-static struct wd_ops k7_wd_ops = {
+static const struct wd_ops k7_wd_ops = {
 	.reserve = single_msr_reserve,
 	.unreserve = single_msr_unreserve,
 	.setup = setup_k7_watchdog,
@@ -380,7 +380,7 @@ static void p6_rearm(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz)
 	write_watchdog_counter32(wd->perfctr_msr, NULL,nmi_hz);
 }
 
-static struct wd_ops p6_wd_ops = {
+static const struct wd_ops p6_wd_ops = {
 	.reserve = single_msr_reserve,
 	.unreserve = single_msr_unreserve,
 	.setup = setup_p6_watchdog,
@@ -532,7 +532,7 @@ static void p4_rearm(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz)
 	write_watchdog_counter(wd->perfctr_msr, NULL, nmi_hz);
 }
 
-static struct wd_ops p4_wd_ops = {
+static const struct wd_ops p4_wd_ops = {
 	.reserve = p4_reserve,
 	.unreserve = p4_unreserve,
 	.setup = setup_p4_watchdog,
@@ -550,6 +550,8 @@ static struct wd_ops p4_wd_ops = {
 #define ARCH_PERFMON_NMI_EVENT_SEL	ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL
 #define ARCH_PERFMON_NMI_EVENT_UMASK	ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK
 
+static struct wd_ops intel_arch_wd_ops;
+
 static int setup_intel_arch_watchdog(unsigned nmi_hz)
 {
 	unsigned int ebx;
@@ -591,11 +593,11 @@ static int setup_intel_arch_watchdog(unsigned nmi_hz)
 	wd->perfctr_msr = perfctr_msr;
 	wd->evntsel_msr = evntsel_msr;
 	wd->cccr_msr = 0;  //unused
-	wd_ops->checkbit = 1ULL << (eax.split.bit_width - 1);
+	intel_arch_wd_ops.checkbit = 1ULL << (eax.split.bit_width - 1);
 	return 1;
 }
 
-static struct wd_ops intel_arch_wd_ops = {
+static struct wd_ops intel_arch_wd_ops __read_mostly = {
 	.reserve = single_msr_reserve,
 	.unreserve = single_msr_unreserve,
 	.setup = setup_intel_arch_watchdog,

arch/x86/kernel/cpuid.c

@@ -43,8 +43,6 @@
 
 static struct class *cpuid_class;
 
-#ifdef CONFIG_SMP
-
 struct cpuid_command {
 	u32 reg;
 	u32 *data;
@@ -62,25 +60,11 @@ static inline void do_cpuid(int cpu, u32 reg, u32 * data)
 {
 	struct cpuid_command cmd;
 
-	preempt_disable();
-	if (cpu == smp_processor_id()) {
-		cpuid(reg, &data[0], &data[1], &data[2], &data[3]);
-	} else {
-		cmd.reg = reg;
-		cmd.data = data;
+	cmd.reg = reg;
+	cmd.data = data;
 
-		smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
-	}
-	preempt_enable();
+	smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
 }
-#else				/* ! CONFIG_SMP */
-
-static inline void do_cpuid(int cpu, u32 reg, u32 * data)
-{
-	cpuid(reg, &data[0], &data[1], &data[2], &data[3]);
-}
-
-#endif				/* ! CONFIG_SMP */
 
 static loff_t cpuid_seek(struct file *file, loff_t offset, int orig)
 {
@@ -150,7 +134,7 @@ static const struct file_operations cpuid_fops = {
 	.open = cpuid_open,
 };
 
-static int cpuid_device_create(int i)
+static int __cpuinit cpuid_device_create(int i)
 {
 	int err = 0;
 	struct device *dev;
@@ -161,7 +145,9 @@ static int cpuid_device_create(int i)
 	return err;
 }
 
-static int cpuid_class_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
+static int __cpuinit cpuid_class_cpu_callback(struct notifier_block *nfb,
+					      unsigned long action,
+					      void *hcpu)
 {
 	unsigned int cpu = (unsigned long)hcpu;
 

arch/x86/kernel/entry_64.S

@@ -988,7 +988,7 @@ child_rip:
 	movq %rsi, %rdi
 	call *%rax
 	# exit
-	xorl %edi, %edi
+	mov %eax, %edi
 	call do_exit
 	CFI_ENDPROC
 ENDPROC(child_rip)

arch/x86/kernel/genapic_64.c

@@ -29,8 +29,6 @@ u8 x86_cpu_to_apicid[NR_CPUS] __read_mostly
 					= { [0 ... NR_CPUS-1] = BAD_APICID };
 EXPORT_SYMBOL(x86_cpu_to_apicid);
 
-u8 x86_cpu_to_log_apicid[NR_CPUS]	= { [0 ... NR_CPUS-1] = BAD_APICID };
-
 struct genapic __read_mostly *genapic = &apic_flat;
 
 /*

arch/x86/kernel/genapic_flat_64.c

@@ -52,7 +52,6 @@ static void flat_init_apic_ldr(void)
 
 	num = smp_processor_id();
 	id = 1UL << num;
-	x86_cpu_to_log_apicid[num] = id;
 	apic_write(APIC_DFR, APIC_DFR_FLAT);
 	val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
 	val |= SET_APIC_LOGICAL_ID(id);

arch/x86/kernel/head_32.S

@@ -51,6 +51,15 @@
  */
 LOW_PAGES = 1<<(32-PAGE_SHIFT_asm)
 
+/*
+ * To preserve the DMA pool in PAGEALLOC kernels, we'll allocate
+ * pagetables from above the 16MB DMA limit, so we'll have to set
+ * up pagetables 16MB more (worst-case):
+ */
+#ifdef CONFIG_DEBUG_PAGEALLOC
+LOW_PAGES = LOW_PAGES + 0x1000000
+#endif
+
 #if PTRS_PER_PMD > 1
 PAGE_TABLE_SIZE = (LOW_PAGES / PTRS_PER_PMD) + PTRS_PER_PGD
 #else
@@ -443,6 +452,7 @@ early_page_fault:
 early_fault:
 	cld
 #ifdef CONFIG_PRINTK
+	pusha
 	movl $(__KERNEL_DS),%eax
 	movl %eax,%ds
 	movl %eax,%es
@@ -534,8 +544,15 @@ int_msg:
 	.asciz "Unknown interrupt or fault at EIP %p %p %p\n"
 
 fault_msg:
-	.ascii "Int %d: CR2 %p  err %p  EIP %p  CS %p  flags %p\n"
-	.asciz "Stack: %p %p %p %p %p %p %p %p\n"
+	.ascii								\
+/* fault info: */	"BUG: Int %d: CR2 %p\n"				\
+/* pusha regs: */	"     EDI %p  ESI %p  EBP %p  ESP %p\n"		\
+			"     EBX %p  EDX %p  ECX %p  EAX %p\n"		\
+/* fault frame: */	"     err %p  EIP %p   CS %p  flg %p\n"		\
+									\
+			"Stack: %p %p %p %p %p %p %p %p\n"		\
+			"       %p %p %p %p %p %p %p %p\n"		\
+			"       %p %p %p %p %p %p %p %p\n"
 
 #include "../../x86/xen/xen-head.S"
 

arch/x86/kernel/i386_ksyms_32.c

 #include <linux/module.h>
+#include <asm/semaphore.h>
 #include <asm/checksum.h>
 #include <asm/desc.h>
 

arch/x86/kernel/i8259_32.c

@@ -349,7 +349,11 @@ static irqreturn_t math_error_irq(int cpl, void *dev_id)
  * New motherboards sometimes make IRQ 13 be a PCI interrupt,
  * so allow interrupt sharing.
  */
-static struct irqaction fpu_irq = { math_error_irq, 0, CPU_MASK_NONE, "fpu", NULL, NULL };
+static struct irqaction fpu_irq = {
+	.handler = math_error_irq,
+	.mask = CPU_MASK_NONE,
+	.name = "fpu",
+};
 
 void __init init_ISA_irqs (void)
 {

arch/x86/kernel/i8259_64.c

@@ -395,7 +395,11 @@ device_initcall(i8259A_init_sysfs);
  * IRQ2 is cascade interrupt to second interrupt controller
  */
 
-static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL};
+static struct irqaction irq2 = {
+	.handler = no_action,
+	.mask = CPU_MASK_NONE,
+	.name = "cascade",
+};
 DEFINE_PER_CPU(vector_irq_t, vector_irq) = {
 	[0 ... IRQ0_VECTOR - 1] = -1,
 	[IRQ0_VECTOR] = 0,

arch/x86/kernel/io_apic_32.c

@@ -1296,6 +1296,11 @@ static void __init setup_IO_APIC_irqs(void)
 			continue;
 		}
 
+		if (!first_notcon) {
+			apic_printk(APIC_VERBOSE, " not connected.\n");
+			first_notcon = 1;
+		}
+
 		entry.trigger = irq_trigger(idx);
 		entry.polarity = irq_polarity(idx);
 

arch/x86/kernel/io_apic_64.c

@@ -875,6 +875,10 @@ static void __init setup_IO_APIC_irqs(void)
 				apic_printk(APIC_VERBOSE, ", %d-%d", mp_ioapics[apic].mpc_apicid, pin);
 			continue;
 		}
+		if (!first_notcon) {
+			apic_printk(APIC_VERBOSE, " not connected.\n");
+			first_notcon = 1;
+		}
 
 		irq = pin_2_irq(idx, apic, pin);
 		add_pin_to_irq(irq, apic, pin);
@@ -885,7 +889,7 @@ static void __init setup_IO_APIC_irqs(void)
 	}
 
 	if (!first_notcon)
-		apic_printk(APIC_VERBOSE," not connected.\n");
+		apic_printk(APIC_VERBOSE, " not connected.\n");
 }
 
 /*
@@ -1845,7 +1849,7 @@ static struct sysdev_class ioapic_sysdev_class = {
 static int __init ioapic_init_sysfs(void)
 {
 	struct sys_device * dev;
-	int i, size, error = 0;
+	int i, size, error;
 
 	error = sysdev_class_register(&ioapic_sysdev_class);
 	if (error)
@@ -1854,12 +1858,11 @@ static int __init ioapic_init_sysfs(void)
 	for (i = 0; i < nr_ioapics; i++ ) {
 		size = sizeof(struct sys_device) + nr_ioapic_registers[i]
 			* sizeof(struct IO_APIC_route_entry);
-		mp_ioapic_data[i] = kmalloc(size, GFP_KERNEL);
+		mp_ioapic_data[i] = kzalloc(size, GFP_KERNEL);
 		if (!mp_ioapic_data[i]) {
 			printk(KERN_ERR "Can't suspend/resume IOAPIC %d\n", i);
 			continue;
 		}
-		memset(mp_ioapic_data[i], 0, size);
 		dev = &mp_ioapic_data[i]->dev;
 		dev->id = i;
 		dev->cls = &ioapic_sysdev_class;

arch/x86/kernel/irq_32.c

@@ -255,9 +255,17 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
+		unsigned any_count = 0;
+
 		spin_lock_irqsave(&irq_desc[i].lock, flags);
+#ifndef CONFIG_SMP
+		any_count = kstat_irqs(i);
+#else
+		for_each_online_cpu(j)
+			any_count |= kstat_cpu(j).irqs[i];
+#endif
 		action = irq_desc[i].action;
-		if (!action)
+		if (!action && !any_count)
 			goto skip;
 		seq_printf(p, "%3d: ",i);
 #ifndef CONFIG_SMP
@@ -268,10 +276,12 @@ int show_interrupts(struct seq_file *p, void *v)
 #endif
 		seq_printf(p, " %8s", irq_desc[i].chip->name);
 		seq_printf(p, "-%-8s", irq_desc[i].name);
-		seq_printf(p, "  %s", action->name);
 
-		for (action=action->next; action; action = action->next)
-			seq_printf(p, ", %s", action->name);
+		if (action) {
+			seq_printf(p, "  %s", action->name);
+			while ((action = action->next) != NULL)
+				seq_printf(p, ", %s", action->name);
+		}
 
 		seq_putc(p, '\n');
 skip:
@@ -280,14 +290,41 @@ int show_interrupts(struct seq_file *p, void *v)
 		seq_printf(p, "NMI: ");
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", nmi_count(j));
-		seq_putc(p, '\n');
+		seq_printf(p, "  Non-maskable interrupts\n");
 #ifdef CONFIG_X86_LOCAL_APIC
 		seq_printf(p, "LOC: ");
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ",
 				per_cpu(irq_stat,j).apic_timer_irqs);
-		seq_putc(p, '\n');
+		seq_printf(p, "  Local timer interrupts\n");
 #endif
+#ifdef CONFIG_SMP
+		seq_printf(p, "RES: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ",
+				per_cpu(irq_stat,j).irq_resched_count);
+		seq_printf(p, "  Rescheduling interrupts\n");
+		seq_printf(p, "CAL: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ",
+				per_cpu(irq_stat,j).irq_call_count);
+		seq_printf(p, "  function call interrupts\n");
+		seq_printf(p, "TLB: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ",
+				per_cpu(irq_stat,j).irq_tlb_count);
+		seq_printf(p, "  TLB shootdowns\n");
+#endif
+		seq_printf(p, "TRM: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ",
+				per_cpu(irq_stat,j).irq_thermal_count);
+		seq_printf(p, "  Thermal event interrupts\n");
+		seq_printf(p, "SPU: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ",
+				per_cpu(irq_stat,j).irq_spurious_count);
+		seq_printf(p, "  Spurious interrupts\n");
 		seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
 #if defined(CONFIG_X86_IO_APIC)
 		seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));

arch/x86/kernel/irq_64.c

@@ -62,9 +62,17 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
+		unsigned any_count = 0;
+
 		spin_lock_irqsave(&irq_desc[i].lock, flags);
+#ifndef CONFIG_SMP
+		any_count = kstat_irqs(i);
+#else
+		for_each_online_cpu(j)
+			any_count |= kstat_cpu(j).irqs[i];
+#endif
 		action = irq_desc[i].action;
-		if (!action) 
+		if (!action && !any_count)
 			goto skip;
 		seq_printf(p, "%3d: ",i);
 #ifndef CONFIG_SMP
@@ -76,9 +84,11 @@ int show_interrupts(struct seq_file *p, void *v)
 		seq_printf(p, " %8s", irq_desc[i].chip->name);
 		seq_printf(p, "-%-8s", irq_desc[i].name);
 
-		seq_printf(p, "  %s", action->name);
-		for (action=action->next; action; action = action->next)
-			seq_printf(p, ", %s", action->name);
+		if (action) {
+			seq_printf(p, "  %s", action->name);
+			while ((action = action->next) != NULL)
+				seq_printf(p, ", %s", action->name);
+		}
 		seq_putc(p, '\n');
 skip:
 		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
@@ -86,11 +96,37 @@ int show_interrupts(struct seq_file *p, void *v)
 		seq_printf(p, "NMI: ");
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
-		seq_putc(p, '\n');
+		seq_printf(p, "  Non-maskable interrupts\n");
 		seq_printf(p, "LOC: ");
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", cpu_pda(j)->apic_timer_irqs);
-		seq_putc(p, '\n');
+		seq_printf(p, "  Local timer interrupts\n");
+#ifdef CONFIG_SMP
+		seq_printf(p, "RES: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", cpu_pda(j)->irq_resched_count);
+		seq_printf(p, "  Rescheduling interrupts\n");
+		seq_printf(p, "CAL: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", cpu_pda(j)->irq_call_count);
+		seq_printf(p, "  function call interrupts\n");
+		seq_printf(p, "TLB: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", cpu_pda(j)->irq_tlb_count);
+		seq_printf(p, "  TLB shootdowns\n");
+#endif
+		seq_printf(p, "TRM: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", cpu_pda(j)->irq_thermal_count);
+		seq_printf(p, "  Thermal event interrupts\n");
+		seq_printf(p, "THR: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", cpu_pda(j)->irq_threshold_count);
+		seq_printf(p, "  Threshold APIC interrupts\n");
+		seq_printf(p, "SPU: ");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", cpu_pda(j)->irq_spurious_count);
+		seq_printf(p, "  Spurious interrupts\n");
 		seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
 	}
 	return 0;

arch/x86/kernel/ldt_32.c

@@ -92,13 +92,13 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 	struct mm_struct * old_mm;
 	int retval = 0;
 
-	init_MUTEX(&mm->context.sem);
+	mutex_init(&mm->context.lock);
 	mm->context.size = 0;
 	old_mm = current->mm;
 	if (old_mm && old_mm->context.size > 0) {
-		down(&old_mm->context.sem);
+		mutex_lock(&old_mm->context.lock);
 		retval = copy_ldt(&mm->context, &old_mm->context);
-		up(&old_mm->context.sem);
+		mutex_unlock(&old_mm->context.lock);
 	}
 	return retval;
 }
@@ -130,7 +130,7 @@ static int read_ldt(void __user * ptr, unsigned long bytecount)
 	if (bytecount > LDT_ENTRY_SIZE*LDT_ENTRIES)
 		bytecount = LDT_ENTRY_SIZE*LDT_ENTRIES;
 
-	down(&mm->context.sem);
+	mutex_lock(&mm->context.lock);
 	size = mm->context.size*LDT_ENTRY_SIZE;
 	if (size > bytecount)
 		size = bytecount;
@@ -138,7 +138,7 @@ static int read_ldt(void __user * ptr, unsigned long bytecount)
 	err = 0;
 	if (copy_to_user(ptr, mm->context.ldt, size))
 		err = -EFAULT;
-	up(&mm->context.sem);
+	mutex_unlock(&mm->context.lock);
 	if (err < 0)
 		goto error_return;
 	if (size != bytecount) {
@@ -194,7 +194,7 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode)
 			goto out;
 	}
 
-	down(&mm->context.sem);
+	mutex_lock(&mm->context.lock);
 	if (ldt_info.entry_number >= mm->context.size) {
 		error = alloc_ldt(&current->mm->context, ldt_info.entry_number+1, 1);
 		if (error < 0)
@@ -221,7 +221,7 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode)
 	error = 0;
 
 out_unlock:
-	up(&mm->context.sem);
+	mutex_unlock(&mm->context.lock);
 out:
 	return error;
 }

arch/x86/kernel/ldt_64.c

@@ -96,13 +96,13 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 	struct mm_struct * old_mm;
 	int retval = 0;
 
-	init_MUTEX(&mm->context.sem);
+	mutex_init(&mm->context.lock);
 	mm->context.size = 0;
 	old_mm = current->mm;
 	if (old_mm && old_mm->context.size > 0) {
-		down(&old_mm->context.sem);
+		mutex_lock(&old_mm->context.lock);
 		retval = copy_ldt(&mm->context, &old_mm->context);
-		up(&old_mm->context.sem);
+		mutex_unlock(&old_mm->context.lock);
 	}
 	return retval;
 }
@@ -133,7 +133,7 @@ static int read_ldt(void __user * ptr, unsigned long bytecount)
 	if (bytecount > LDT_ENTRY_SIZE*LDT_ENTRIES)
 		bytecount = LDT_ENTRY_SIZE*LDT_ENTRIES;
 
-	down(&mm->context.sem);
+	mutex_lock(&mm->context.lock);
 	size = mm->context.size*LDT_ENTRY_SIZE;
 	if (size > bytecount)
 		size = bytecount;
@@ -141,7 +141,7 @@ static int read_ldt(void __user * ptr, unsigned long bytecount)
 	err = 0;
 	if (copy_to_user(ptr, mm->context.ldt, size))
 		err = -EFAULT;
-	up(&mm->context.sem);
+	mutex_unlock(&mm->context.lock);
 	if (err < 0)
 		goto error_return;
 	if (size != bytecount) {
@@ -193,7 +193,7 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode)
 			goto out;
 	}
 
-	down(&mm->context.sem);
+	mutex_lock(&mm->context.lock);
 	if (ldt_info.entry_number >= (unsigned)mm->context.size) {
 		error = alloc_ldt(&current->mm->context, ldt_info.entry_number+1, 1);
 		if (error < 0)
@@ -223,7 +223,7 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode)
 	error = 0;
 
 out_unlock:
-	up(&mm->context.sem);
+	mutex_unlock(&mm->context.lock);
 out:
 	return error;
 }

arch/x86/kernel/mce_64.c

@@ -695,8 +695,6 @@ static int __init mcheck_disable(char *str)
    mce=nobootlog Don't log MCEs from before booting. */
 static int __init mcheck_enable(char *str)
 {
-	if (*str == '=')
-		str++;
 	if (!strcmp(str, "off"))
 		mce_dont_init = 1;
 	else if (!strcmp(str, "bootlog") || !strcmp(str,"nobootlog"))
@@ -709,7 +707,7 @@ static int __init mcheck_enable(char *str)
 }
 
 __setup("nomce", mcheck_disable);
-__setup("mce", mcheck_enable);
+__setup("mce=", mcheck_enable);
 
 /* 
  * Sysfs support